Conductive force transmission assembly and fuel cell stack

Abstract

The invention relates to the technical field of new energy, in particular to a conductive force transfer assembly and a fuel cell stack. The conductive force transmission assembly comprises an electric conductor, and a plurality of protruding parts are evenly distributed on the surface of the electric conductor. According to the invention, the electric conductor with the uniformly distributed convex parts is arranged between the short reactor assemblies, and the uniformly distributed convex parts of the electric conductor uniformly transmit the pressure applied by the previous short reactor assembly to the next short reactor assembly, so that the pressure between the short reactor assemblies is uniformly distributed again; and the phenomena of stress concentration and non-uniform distribution in the fuel cell stack are eliminated, so that the current distribution in the fuel cell is improved, and the phenomenon that the performance of the fuel cell is greatly reduced due to local water logging or local hydrogen deficiency is avoided.

Description

technical field [0001] The present application relates to the field of new energy technology, in particular to a conductive force transmission component and a fuel cell stack. Background technique [0002] At present, fuel cell stacks usually need to provide appropriate pressure to meet the sealing pressure between the plates, and provide appropriate uniform pressure for fuel cell stacks to reduce contact resistance. However, large-scale fuel cell stack assembly generally requires 300-500 For a single cell, due to the precision error generated by the manufacturing of the single cell and the cumulative error generated by the stack, the internal pressure of the fuel cell stack has stress concentration and uneven distribution, and the current distribution caused by the uneven pressure is uneven. Local water flooding or local hydrogen deficiency will greatly reduce the performance of the fuel cell. Therefore, how to solve the technical problem of uneven pressure distribution ins...

AI Technical Summary

Problems solved by technology

[0003] The application provides a conductive force transmission component and a fuel cell stack, aiming to solve the technical problem of uneven pressure distribution inside the fuel cell stack. The application provides conductors with uniformly distributed protrusions between the short stack components , the raised portion of the conductor evenly distributes the pressure exerted by the previous short stack assembly to the next short stack assembly, realizing the uniform distribution of pressure between the short stack components again, and eliminating the accuracy error caused by single cell manufacturing and stacking. The phenomenon of stress concentration and uneven distribution caused by the cumulative error of the system can improve the current distribution inside the fuel cell and avoid the phenomenon of local water flooding or local hydrogen deficiency that will greatly reduce the performance of the fuel cell.

Images